Seat device for vehicle

Abstract

There are provided a seatback supporting backs of plural passengers seated on a bench type of seat cushion, a headrest provided at an upper portion of a first portion of the seatback and supporting a head of the passenger seated in front of the first portion, a pressure-receiving portion provided at a second portion of the seatback which is arranged beside the first portion so as to move rearwardly when being pressed by a rearward move of the passenger seated in front of the second portion, and a headrest moving mechanism provided to connect the pressure-receiving portion to the headrest so that the headrest is moved forwardly or upwardly in accordance with a rearward move of the pressure-receiving portion. Accordingly, the passenger's head can be protected with a simple structure.

1. A seat device for a vehicle, comprising:
 a bench type of seat cushion for plural passengers seated side by side in a vehicle width direction; 
 a seatback supporting backs of the plural passengers seated on the bench type of seat cushion side by side, the seatback comprising a first portion and a second portion which are arranged side by side in the vehicle width direction, the first portion of the seatback supporting the back of one of the plural passengers seated side by side on the bench type of seat cushion, the second portion of the seatback supporting the back of the other of the passengers seated side by side on the bench type of seat cushion; 
 a headrest provided at least at an upper portion of said first portion of the seatback, the headrest supporting a head of said one of the passengers seated on the bench type of seat cushion in front of the first portion of the seatback; 
 a pressure-receiving portion provided at said second portion of the seatback so as to move rearwardly when being pressed by a rearward move of said other of the passengers seated on the bench type of seat cushion in front of the second portion of the seatback; and 
 a headrest moving mechanism provided to connect said pressure-receiving portion to said headrest provided at the upper portion of the first portion of the seatback so that the headrest is moved forwardly or upwardly in accordance with a rearward move of the pressure-receiving portion, the headrest moving mechanism includes a linkage mechanism which extends substantially laterally in the vehicle width direction from a position at said second portion of the seatback to another position at said first portion of the seatback for connection of the pressure-receiving portion to the headrest. 
 
     
     
       2. The seat device for a vehicle of  claim 1 , wherein said seatback comprises a seatback body portion to contact the passenger's back and a reinforcing structure to reinforce the seatback body portion, including a portion extending along an upper edge and both-side edges of the seatback body portion, and said headrest moving mechanism comprises a connection portion to connect said pressure-receiving portion to said headrest and a swing axis which is provided at an upper portion of said reinforcing structure of the seatback to support the connection portion so that the connection portion swings longitudinally, the pressure-receiving portion being connected to a lower portion of the connection portion below the swing axis, the headrest being connected to an upper portion of the connection portion above the swing axis. 
     
     
       3. The seat device for a vehicle of  claim 2 , further comprising an armrest supporting an arm of the passenger, wherein said first portion of the seatback includes an armrest storage portion to store the armrest. 
     
     
       4. The seat device for a vehicle of  claim 3 , wherein said armrest comprises an armrest body portion to support the passenger's arm and an armrest support axis fixed to a lower end portion of the seatback, the armrest body portion being movable between a storage position where the armrest body portion is stored in said armrest storage portion and a use position where the armrest body portion extends forwardly from the seatback. 
     
     
       5. The seat device for a vehicle of  claim 4 , wherein said armrest body portion includes a small-article storage portion at an upper part of the armrest body portion located in the storage position, the small-article storage portion having a specified thickness in a longitudinal direction, said connection portion of the headrest moving mechanism and the small-article storage portion being arranged so as not to overlap with each other in an elevation view. 
     
     
       6. The seat device for a vehicle of  claim 5 , wherein said connection portion of the headrest moving mechanism comprises an upper swing portion which extends in a seat width direction and is connected to said headrest, a lateral swing portion which extends downward from an end of the upper swing portion in the seat width direction and to which said swing axis is attached, and a middle swing portion which extends from the lateral swing portion in the seat width direction substantially at the same height position as the swing axis, the upper swing portion being arranged at a specified position so as not to interfere with said small-article storage portion when swinging longitudinally around the swing axis, the middle swing portion being arranged at a specified position which is located between the small-article storage portion and the support axis of the armrest located in the storage position and rearwardly from a part of the armrest between the small-article storage portion and support axis. 
     
     
       7. A seat device for a vehicle, comprising:
 a bench type of seat cushion for plural passengers seated side by side in a vehicle width direction; 
 a seatback supporting backs of the plural passengers seated on the bench type of seat cushion side by side, the seatback comprising a first portion and a second portion which are arranged side by side in the vehicle width direction, the first portion of the seatback supporting the back of one of the plural passengers seated side by side on the bench type of seat cushion, the second portion of the seatback supporting the back of the other of the passengers seated side by side on the bench type of seat cushion; 
 a first headrest provided at an upper portion of said first portion of the seatback, the headrest supporting a head of said one of the passengers seated on the bench type of seat cushion in front of the first portion of the seatback; 
 a second headrest provided at an upper portion of said second portion of the seatback, the second headrest supporting a head of said other of the passengers seated on the bench type of seat cushion in front of the second portion of the seatback; 
 a pressure-receiving portion provided at said second portion of the seatback so as to move rearwardly when being pressed by a rearward move of said other of the passengers seated on the bench type of seat cushion in front of the second portion of the seatback; and 
 a headrest moving mechanism provided to connect said pressure-receiving portion to said first and second headrests provided at the respective upper portions of the first and second portions of the seatback so that both the first and second headrests are moved forwardly or upwardly in accordance with a rearward move of the pressure-receiving portion.